IMPERIAL, CALIFORNIA

Monthly Total Cooling Degree Days

(044223)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 35.50 7.00 42.50
1902 1.00 11.00 7.00 309.00 526.50 747.00 717.50 777.00 620.50 283.00 11.50 0.00 4011.00
1903 0.00 10.50 157.00 278.00 542.00 860.00 928.00 906.50 613.00 292.50 0.00 z 0.00 4587.50
1904 0.00 36.50 134.50 180.50 391.00 656.00 753.50 810.50 547.00 155.52 a 47.00 0.00 3712.02
1905 0.00 2.00 49.50 112.00 273.00 566.00 800.83 a 720.50 f 593.00 228.50 20.00 0.00 2644.83
1906 0.00 17.00 36.34 b 167.50 284.00 543.50 820.00 781.09 c 549.00 295.50 75.50 0.00 3569.43
1907 0.00 13.50 40.82 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 46.00 0.00 z 100.32
1908 0.00 8.50 48.50 157.00 282.21 b 502.50 874.09 c 781.41 b 0.00 z 0.00 z 0.00 z 0.00 z 2654.21
1909 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.00 1.00
1911 1.50 0.00 89.50 143.50 334.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 568.50
1912 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1913 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1914 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1917 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1918 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1919 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1920 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1921 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1922 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1923 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1924 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 177.22 a 6.50 0.00 183.72
1926 0.00 6.50 83.00 240.00 199.50 q 653.08 d 782.48 b 755.50 533.89 c 255.48 b 30.50 0.00 3340.43
1927 0.00 12.00 26.00 205.00 424.00 569.50 828.50 808.77 c 532.50 272.80 a 35.56 c 0.00 3714.62
1928 0.00 0.00 67.00 158.04 b 400.00 602.00 782.00 724.50 617.00 241.00 17.50 0.00 3609.04
1929 0.00 0.50 27.50 101.50 398.50 581.38 a 752.00 794.50 468.50 0.00 z 10.50 0.00 3134.88
1930 0.00 17.50 36.50 212.50 235.50 546.00 777.00 700.00 440.50 163.50 44.00 0.00 3173.00
1931 3.50 0.00 68.50 225.50 463.50 589.50 937.00 773.50 540.00 249.50 58.50 0.00 3909.00
1932 0.00 z 7.50 29.00 152.50 354.50 575.00 766.50 771.50 618.50 218.50 3.00 0.00 o 3496.50
1933 0.00 0.00 11.50 73.00 269.50 563.50 865.00 820.00 595.50 400.00 40.00 c 0.00 3638.00
1934 0.00 11.00 234.50 319.00 535.50 463.50 890.00 897.00 644.00 388.50 103.50 1.50 4488.00
1935 5.00 6.00 20.00 158.00 311.00 700.00 776.00 793.50 670.50 258.50 5.00 0.00 3703.50
1936 0.00 8.50 106.00 266.00 482.00 685.00 849.50 831.50 558.50 286.50 30.00 0.00 4103.50
1937 0.00 0.00 13.00 134.50 376.00 591.50 916.00 889.00 698.50 337.50 34.50 0.00 3990.50
1938 0.00 0.00 14.00 156.00 399.50 622.00 827.50 799.50 665.50 234.50 5.00 6.00 3729.50
1939 0.00 0.00 79.00 249.50 439.50 604.50 842.00 859.00 516.00 229.00 37.00 6.50 3862.00
1940 4.00 2.50 99.00 221.50 549.00 701.00 797.00 846.50 577.00 320.50 12.50 5.00 4135.50
1941 0.00 0.00 16.00 101.50 452.00 551.00 823.50 689.50 424.50 147.50 75.00 1.50 3282.00
1942 1.50 2.00 28.00 127.50 362.50 617.00 914.00 832.00 567.50 283.50 33.00 0.50 3769.00
1943 0.00 11.50 83.50 232.50 437.00 514.50 772.00 739.00 683.50 310.00 14.50 0.00 3798.00
1944 0.00 0.00 9.00 141.00 351.00 448.00 713.00 820.50 615.50 337.00 30.50 0.00 3465.50
1945 0.00 2.50 20.50 169.50 377.50 556.50 836.50 780.50 650.50 347.50 39.50 0.00 3781.00
1946 0.00 2.50 9.00 254.00 373.50 677.50 820.00 836.50 647.50 168.50 0.00 1.00 3790.00
1947 0.00 6.50 44.50 193.00 455.50 591.50 847.00 749.50 676.00 296.00 6.50 0.00 3866.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 763.50 814.00 660.00 331.50 5.00 5.00 2579.00
1949 0.00 0.00 12.00 260.00 366.00 631.50 798.00 769.00 741.50 236.00 98.00 3.00 3915.00
1950 0.00 7.00 72.00 265.50 329.00 559.50 769.50 790.50 533.00 425.50 122.50 3.50 3877.50
1951 1.00 10.50 31.50 161.00 387.00 545.50 818.00 762.00 654.00 331.50 8.00 4.50 3714.50
1952 0.00 4.50 23.50 142.50 514.50 531.50 796.50 842.50 692.00 509.00 6.00 0.00 4062.50
1953 4.50 7.50 40.50 128.00 232.00 558.00 875.00 795.50 641.50 322.00 70.00 0.00 3674.50
1954 2.50 41.00 23.50 288.50 415.40 a 553.00 864.50 735.50 649.00 361.50 72.50 0.00 4006.90
1955 0.00 6.50 40.50 113.50 314.00 571.00 734.00 803.50 646.00 392.00 45.00 5.00 3671.00
1956 0.00 0.00 76.00 150.50 381.00 661.50 781.00 721.00 766.50 276.50 36.50 0.00 3850.50
1957 0.00 54.50 58.00 155.50 274.50 712.00 872.00 784.00 638.50 215.50 6.50 1.00 3772.00
1958 0.00 4.50 9.00 201.50 546.50 633.00 813.50 864.50 681.50 415.00 49.50 8.00 4226.50
1959 0.00 0.00 f 78.53 a 279.00 344.00 716.00 909.00 794.50 562.50 325.50 46.50 0.50 4056.03
1960 0.00 0.50 115.50 253.50 392.50 737.00 871.00 823.00 706.50 315.50 25.00 0.00 4240.00
1961 0.00 3.50 26.50 219.50 341.00 692.50 812.00 810.50 528.00 286.50 6.50 0.00 3726.50
1962 7.50 2.00 16.00 284.50 270.00 583.50 787.50 888.00 664.00 341.00 88.50 0.50 3933.00
1963 0.00 58.50 22.50 107.50 446.00 509.50 809.00 783.50 670.00 407.50 61.00 0.00 3875.00
1964 0.00 0.00 36.00 142.50 368.00 569.00 841.00 791.50 562.00 442.00 38.50 4.50 3795.00
1965 4.00 18.50 20.00 213.00 368.00 467.00 793.50 813.50 509.00 415.00 88.00 0.00 3709.50
1966 0.00 0.00 91.50 260.50 476.00 639.00 850.00 856.50 634.00 296.50 66.00 23.00 4193.00
1967 1.50 2.50 72.00 17.00 359.00 532.50 878.50 883.00 613.50 393.00 113.50 0.00 3866.00
1968 0.00 67.50 73.00 149.00 423.50 648.50 817.50 730.50 614.50 340.00 69.00 0.00 3933.00
1969 5.00 0.00 74.50 192.00 472.00 536.50 863.00 961.50 712.50 232.00 57.50 0.00 4106.50
1970 1.50 7.00 42.00 105.50 431.50 655.00 878.00 885.00 585.50 256.50 34.00 0.00 3881.50
1971 22.50 14.00 86.50 136.50 289.00 575.00 850.00 814.50 626.00 223.50 21.00 0.00 3658.50
1972 0.00 22.50 193.00 214.50 413.50 634.50 899.50 760.50 578.00 228.50 5.50 0.00 3950.00
1973 0.00 4.00 0.00 121.00 469.50 688.00 811.50 806.50 563.00 323.50 75.00 0.00 3862.00
1974 3.50 0.00 90.50 174.00 426.50 731.00 812.00 795.50 708.50 343.50 30.50 0.00 4115.50
1975 0.00 2.00 24.50 41.50 344.50 602.50 826.50 830.00 682.50 269.50 54.50 2.50 3680.50
1976 5.00 3.00 34.50 120.00 443.00 655.00 792.50 747.50 527.50 305.50 88.50 0.00 3722.00
1977 0.00 40.50 20.50 233.00 235.50 700.50 870.00 820.00 618.00 411.00 74.50 1.50 4025.00
1978 0.00 2.50 100.50 141.00 426.00 775.50 891.50 823.50 590.50 457.50 64.00 0.00 4272.50
1979 0.00 0.00 51.50 209.00 380.00 677.50 836.50 735.50 750.50 402.50 14.50 3.00 4060.50
1980 8.50 17.50 11.00 192.50 278.00 671.50 925.50 810.50 648.00 361.00 85.00 8.50 4017.50
1981 3.50 29.00 49.50 239.00 416.00 766.00 875.00 896.50 704.50 251.50 90.00 2.50 4323.00
1982 0.00 38.00 32.00 193.50 351.50 533.50 791.00 848.50 593.50 273.50 11.00 0.00 3666.00
1983 1.50 5.00 58.00 86.50 430.00 578.00 836.00 768.50 732.50 387.50 98.50 3.00 3985.00
1984 0.00 7.50 78.50 168.00 557.50 622.50 832.50 833.00 748.50 245.50 49.00 0.00 4142.50
1985 0.00 5.50 29.00 278.00 440.00 707.00 878.50 841.00 476.50 289.00 48.00 0.00 3992.50
1986 3.00 63.50 168.50 228.00 456.50 725.50 811.00 890.50 510.00 262.50 42.50 0.00 4161.50
1987 3.50 10.50 28.50 332.50 434.00 693.00 768.50 813.00 652.50 445.50 36.50 0.00 4218.00
1988 0.00 15.00 98.50 180.50 383.50 609.00 824.00 797.00 604.50 468.50 95.00 0.00 4075.50
1989 0.00 42.00 145.50 357.00 447.00 656.50 858.00 756.50 628.00 306.00 35.00 0.00 4231.50
1990 0.00 15.50 107.50 258.50 368.00 669.00 842.50 751.50 646.00 323.00 48.50 0.00 4030.00
1991 0.00 17.00 6.50 165.50 312.00 510.00 739.00 804.00 662.50 479.50 60.50 0.00 3756.50
1992 0.00 10.50 18.50 285.00 458.50 588.00 760.00 836.00 689.50 358.50 15.50 0.00 4020.00
1993 0.00 0.00 108.50 248.50 438.00 655.50 757.50 783.00 621.50 365.50 17.50 0.00 3995.50
1994 0.00 0.00 85.50 201.50 338.00 710.50 846.50 890.50 681.00 293.50 5.00 0.00 4052.00
1995 0.00 27.50 57.00 151.00 258.50 532.00 823.00 898.00 758.00 349.50 113.50 0.00 3968.00
1996 0.00 44.50 85.00 229.50 485.50 631.50 808.50 830.50 577.00 328.50 28.50 2.00 4051.00
1997 1.00 1.00 101.00 177.50 542.50 537.00 726.50 855.50 684.00 265.00 62.50 0.00 3953.50
1998 0.00 0.00 35.50 125.50 243.50 506.50 828.50 857.00 593.50 224.50 4.50 2.00 3421.00
1999 0.00 2.50 19.00 104.00 350.50 558.50 764.00 771.00 629.50 374.00 90.00 0.00 3663.00
2000 16.00 7.50 60.50 292.50 523.00 701.00 825.50 861.00 644.50 268.50 3.00 2.00 4205.00
2001 0.00 7.00 121.00 181.00 586.00 733.00 825.00 863.50 736.00 444.50 146.50 0.00 4643.50
2002 0.00 14.00 59.00 215.00 412.00 699.00 868.00 809.00 696.50 315.50 72.00 0.00 4160.00
2003 29.00 13.00 102.00 120.00 449.00 632.00 901.50 889.50 770.00 544.00 13.00 0.00 4463.00
2004 0.00 1.50 262.50 253.00 512.50 641.50 836.50 834.50 634.00 286.00 3.00 0.00 4265.00
2005 0.00 0.00 66.50 156.00 442.50 586.50 836.00 804.00 622.50 339.00 85.00 2.50 3940.50
2006 0.00 13.50 39.00 167.50 524.00 798.50 900.50 813.50 658.50 321.50 94.00 0.00 4330.50
2007 0.00 10.00 150.50 222.50 456.50 670.50 871.50 888.00 611.00 319.50 104.50 0.00 4304.50
2008 0.00 2.50 77.50 137.50 312.50 651.50 777.50 748.50 617.50 320.50 68.50 1.50 3715.50
2009 3.50 9.00 71.50 168.00 0.00 z 0.00 z 936.00 830.00 705.50 261.50 72.00 0.00 3057.00
2010 0.00 0.00 45.50 104.50 321.00 0.00 z 848.00 810.50 647.00 255.00 55.50 1.50 3088.50
2011 4.00 0.50 72.00 191.00 237.00 592.00 814.00 851.00 620.50 280.50 2.50 0.00 3665.00
2012 0.00 0.00 17.50 139.50 404.50 578.00 693.50 735.00 599.50 360.00 85.50 8.50 3621.50
2013 0.50 2.50 167.00 5.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 170.00
Period of Record Statistics
MEAN 1.59 10.78 62.94 187.84 397.01 621.17 826.06 811.68 625.85 314.98 46.71 1.38 3921.86
S.D. 4.31 15.01 50.10 66.21 85.57 79.96 53.07 51.75 72.22 79.33 34.12 3.09 263.40
SKEW 4.48 2.09 1.50 0.16 -0.02 0.28 -0.08 0.13 -0.36 0.39 0.53 4.26 -0.01
MAX 29.00 67.50 262.50 357.00 586.00 860.00 937.00 961.50 770.00 544.00 146.50 23.00 4643.50
MIN 0.00 0.00 0.00 17.00 232.00 448.00 693.50 689.50 424.50 147.50 0.00 0.00 3173.00
NO YRS 94 94 95 93 91 90 93 92 92 92 94 94 83